Change the fonts in the 3.4 dashboard
The dashboard is now much harder to read on a non-retina display than it was in previous versions.
I've been having the same issue so using the extensibility that was released with 3.5 I've built an extension that applies a couple of CSS tweaks at a server level to help with this
Brad Engels commented
I agree that it is hard to read now. Just changing the font-weight to 'normal' makes it much better.